Vehicle ramp



Feb. 24, 1948. H; A, WINTER 2,436,467

VEHICLE RAMP Filed Aug. 27 1946 Patented Feb. 24, 11948 VEHICLE RAMP lIenry A. Winter, Denver, Colo., assignor to Patents, Inc., Denver, Colo., ya corporation of Colorado Application August 27, 1946, Serial No. 693,251

This inventionjrelates to a loading ramp for what is known as -a low bed heavy duty trailer. 1

Such trailers are. used, for transporting tanks, tractors and heavy machinery of various types.

The principal objectof the invention is to provide a combination loading ramp and chock block for trailers of this type rwhich will allow heavy equipment to be driven directly onto the trailer; which will relieve the load on the rear wheels of the trailer during the vloading operation; and which will prevent forward and backward movement of the loadedrequipment.Whenin place up on the trailer. Y,

Other objects and advantages reside in the detail construction of the invention; which is designed for simplicity, economy, and efficiency.

These will become more apparent from the following description.

In the following detailed description of the invention,v reference ls had to the accompanying drawing which forms a part hereof. Like numerals refer to like parts in` all viewsof the draw-v ing and throughout the description.

In the drawing: i Fig. 1 is a side elevation'of a typical low bed heavy duty trailer with thev improved ramp in riding position thereon;

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2 j rear extremity of the platform I to receive andy support the latter under the weight of the oncomf ing load. It is also provided with a rearwardly inclined shelf portion from which a pair of `re taining dowel pins 2I'project upwardly and rearwardly. The terminal blocks I'I are formed with forwardly extending lips 22 which rest on the shelves 20 and are prevented from slipping therefrom by means of the dowel pins 2| which enterv I,

receiving openings in the lips 22.

Traction cleats 2 3 are attached to and extend transversely across the upper inclined surfaces of both blocks I6 and II and across the portions of ,the platform I5 in alignment with the ramps. 'The upper surfaces of both blocks are inclined on a common angle corresponding to the incline of ,I the platform I5. A receiving rack 24 is providedv at each side of the goose neck I4 for receiving the two terminal blocks I'I when not in use.

Fig, 2 is a side View of the invention ready foi` t use as a ramp for loading the trailef Fig. 3 is a detailed perspective view of a portion of the ramp which is removable for use as a chock block;

Fig. 4 is an enlarged rear view of the trailer with the improved ramp in place thereon; and

Fig. 5 is an enlarged detail section, taken on the line 5--5, Fig. 2.

In the drawing, the rear wheel of a tow car ls indicated at I U with its fifth wheel or turntable at II. The bed of a heavy duty trailer is indicated at I2 with its rear supporting wheels at I3 and forward goose neck at I4. The goose neck PI4 connects on the turntable II as is usual in this type of trailer construction.

In applying this invention to the trailer, the rear extremity of the bed I2 is inclined downwardly to form a load receiving platform I5. A loading ramp is hingedly connected at each side of the rear edge of the inclined loading platform.

Each loading ramp edge consists of a supporting block I6 and a terminal block I1. Each supporting block I6 is attached to the rear extremity of the platform I5 by means of two connecting links I8. Each block I6 is provided with a forwardly extending shelf I9 which, when the block is in the loading position, extends beneath the Operation Let us assume it is desired to drive a tractor --1 or other large vehicle onto .thetrailen The blocks I6 are lowered tothe solid line position of Fig, 2 and the blocks/I1 are attached thereto, as shownV in Fig. 2 by means of the pins 2|.' The tractor may now be driven directly onto the trailer bed- '1 I2, When the oncoming vehicle reaches the-plat# form I5 the weight thereof will force the bed downwardly, the links I8 allowing relative movement, until the platform I5 rests on the shelves I9. VThe blocks I6 now support the load and relieve the weight on the wheels I6 until the oncoming vehicle is in proper position on the bed I2.

When the vehicle is in proper place, the terminal blocks II are removed from the supporting blocks IB and the latter are turned upwardly as shown in broken lines in Fig. 2 to provide a backstop or chock block to prevent rearward movement of the load. The cleats on the blocks I6 engage the cleats on the platform I5 so as to pre vent rearward movement of the block I6. The terminal blocks I'I can be inverted on the bed I2 ahead of the load, as shown in broken line in Fig. 1, to act as chock blocks to prevent forward movement thereof. If forward chock blocks are not needed, the blocks I'I are slipped into the receiving racks 24 until again needed for ramp purposes.

While a specific form of the improvement has been described and illustrated herein, it is desired to be understood that the same may be varied, within the scope of the appended claims, without departing from the spirit of the invention.

Having thus described the invention, what is claimed and desired secured by Letters Patent is:

1. A combination chock block and ramp for a heavy duty trailer comprising: a first block membei having an inclined upper surface; means hngedly connecting said first block member to said bed so that when lowered, it will form a downa backstop'iV a second inclined block; means for form a continuation of the inclined upper surface thereof; and a forwardly projecting shelf on said;`

ber having an inclined uppenisiirfacei means)V hingedly connecting said first block memberto"V said bed so that when lowered, it will form a downward incliney `from therear of said bed and wfiei raised 'antiffol'deil willA ,rest on'. said bed to forna backstopiva second incliedfblock; means forl'secringsaifil "ejordf citojsa-id firstA block to form a c6nti-niatiori; ofthe inclined-upper sur-V facgfth'ereo la forwardlyf p ect-ingl shelf on*r said finstbloclipos'itiolned t v ndlsupport the rearegtreniity ofsa n alisecondl shelf' extendingA rearwardly 'fro s aidniiilstA block; anda 11D 'fdimd mi Saisl .0., Llzsiifar'@Still gA 0n` Said' Segond shlf. l 3:5A`combination c` u r heavydiitytrailer comprisirigg;- aflrsthblock mem`V bei#m havin `an incline fs'iirfaceg means meer fentres 'sa ,Y Y said; bedf so that lwhen lowered; it;v will .forml a n he w form* a bakstqp: aeecorrqgggng for securingsaiifsecontilblock to said firstv block to form a continuation),gfthginclined upper surface thereof; a forwardly projecting shelf on said iirstsblockffpostionedttotireneive; and; support the rear-- extremity; of; said benin` aisecondiA shelf.: ex-

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rchoombinationchoclo blockfandaramp-for a` n oclijblolr andramp fora K bleek member.- w 35 4 heavy duty trailer comprising: a first block meins ber having an inclined upper surface; means hingedly connecting said rst block member to said bed so that when lowered, it will form a downward incline from the rear of said bed and when raised and folded will rest on said bed to form a backstop; a second inclined block; means far,Steinmannswndfbloamc saieret block te form a continuation efitleeiatlined-iu-rseer Sur- 10 face thereof; a forwardly'projecting shelf on securing said second block to said first block todi said rst block positioned to receive and support the rear extremity of said bed; a second shelf extending rearwardly from said iirst block; a lip formedwcnsaid ,sepondplock resting on said secu* ond shelfj-dowelpins securing said lip on said """second shelff'saidsegpnd block being removable;` and a receiving rack on said trailer for receiving saidsecondblockrwhen removed from said first blogg.,

2o 5. Acombination chock block and ramp for a heavy duty treiiecomlrisinea a rstbloek mem.-

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blockfis fdf "911. fiisifbdfs-idma S .,Willngaee, to prevent rearward movement of' the former, ,.A- WN'ITERi REFEEENGESUIEDj le of 'this patenti nonniorrepa'rnnrrs; Y Number Gamin' Det-e 814,016 France?,fn-wma Mar-11. 41,937,A 

